Shout-out to Twitter user @sigalfano who let me know, after some guesswork, that a tower crane stub had been planted at No. 508 (508 West Diversey Parkway) on Friday. It joins One South Halsted in the stub group, with full assembly likely while I’m in England. So take pictures and videos of it going up and send them the blog’s way.

This is the only tower crane in the Chicago skies right now for Macon Construction Group, the general contractor tasked with building the 12-story, 53-apartment Pappageorge Haymes design.